Where does the largest addition of oil to the ocean come from? ...

[asan beg]

Where does the largest addition of oil to the ocean come from?
  a. Runoff from land and city streets
  b. Spills from tankers
  c. Transportation
  d. Drilling platforms

Question 2

How do many exotic species find their way to new waters?
  a. Migrations
  b. Carried in the ballast water of tankers
  c. Marine birds
  d. Storms

[Moriaki]

Answer to Question 1

ANS: A
There has been over 900 million liters of used motor oil added to the ocean. This is 22 times the
volume of the Exxon Valdez spill. This oil is much more toxic too. Information can be found in the
section Marine Pollutants May Be Natural or Human Generated.

Answer to Question 2

ANS: B
Sometimes these species out-compete native species. When they enter an area, they often cause a
decline in the biodiversity of the community. Information can be found in the section Marine
Pollutants May Be Natural or Human Generated.

[asan beg]

Gracias!

[pangili4]

YES! Correct, THANKS for helping me on my review